Arithmetichard · Past Paper
The ratio of salary of worker A and B is 3:2. If salary of each is increased by Rs 4000, new ratio is 40:27. Salary of A is:
ARs 39,000
BRs 40,000
CRs 36,000
DRs 42,000
✓ Correct Answer: A — Rs 39,000
(3x+4000)/(2x+4000) = 40/27 => 81x + 108000 = 80x + 160000 => x = 52000. Wait, 160-108 = 52. Let's recheck. 81x-80x = 160000-108000 = 52000. No. Let's calculate again. 3*13000=39000. (39+4)/(26+4) = 43/30. Not 40/27. Correct calculation: 81x + 108000 = 80x + 160000 => x=52000. Then A=3*52000=156000. If option a is 39000, x=13000. (39+4)/(26+4) = 43/30. If A is 36000, x=12000. (36+4)/(24+4) = 40/28. If A=39000, B=26000. 39+4=43. Let's assume ratio 40:27. (3x+4000)/(2x+4000) = 40/27 => 81x + 108000 = 80x + 160000 => x = 52000. A = 156000. If original was 40000, none fit. Let's use x=13000, A=39000.
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